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mini-me VTEC engagment

03-07-2008, 05:14 PM
i've just done the Y8 head onto my A6 block and all i can say is wow. even just using the small lobe it's a blast to drive with the higher compression. but i dont have the VTEC engaging. I kno why i dont tho.

i'm just wondering wat would be the least expensive route to go about wen it comes to using the VTEC? currently i'm running the Y8 FPR and that seems fine for the small lobe. But i'm afraid that wen i use the big lobe it wont be enough. I kno that the fuel maps change wen it kicks in but mine wont cuz i'm running the stock Si ECU.

so basically will my current set up run enough fuel for the VTEC to not detonate? would maybe a bigger injector or some trick wiring work? like messing with the coolant wires to make it run richer or something?

also instead of having my ECU reprogrammed or having a piggy back or an RPM swith, could i simply use a toggle switch between the solenoid and a power source? just monitor everything until it's all warmed up and then flip the switch basically?

Thank you in advance,

Steven Folchi

03-07-2008, 05:47 PM
youre thinking too into this. the FPR you have and the injectors you have will work fine. get the ECU from the head you have and just run the wires for the vtec solnoid and oil pressure switch. then vtec should engage

03-12-2008, 09:47 AM
Yeah use the correct ecu for the head. If your car is obd1 or obd0 you may want to use a p28 ecu. Switches just lead to trouble.

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